New names for possible appointees to U.S. President-elect Donald Trump’s Cabinet have emerged, including 2012 presidential candidate Mitt Romney as secretary of state, as he works to fill administration positions ahead of his inauguration on Jan. 20.

A senior Trump official said the job of national security adviser has been offered to retired Lieutenant General Michael Flynn.

Trump announced on Sunday he would hire Republican National Committee Chairman Reince Priebus as White House chief of staff and named Stephen Bannon, former head of the conservative website Breitbart News, as his chief strategist and senior counselor.

Below are people mentioned as contenders for senior roles.

Treasury Secretary

Steven Mnuchin, former Goldman Sachs Group gs executive and Trump’s campaign finance chairman
Jeb Hensarling, U.S. representative from Texas and chairman of the House Financial Services Committee
Jamie Dimon, JPMorgan Chase jpm chief executive officer
Tom Barrack, founder and chairman of Colony Capital clny


Secretary of State

Mitt Romney, 2012 presidential nominee and former Massachusetts governor
Rudy Giuliani, former mayor of New York City
Nikki Haley, governor of South Carolina
Jeff Sessions, U.S. senator from Alabama and early Trump supporter, member of the Senate Armed Services Committee
John Bolton, former U.S. ambassador to the United Nations under President George W. Bush
Bob Corker, U.S. senator from Tennessee and chairman of the Senate Foreign Relations Committee
Zalmay Khalilzad, former U.S. ambassador to Iraq


Defense Secretary

Jeff Sessions, U.S. senator from Alabama and early Trump supporter, member of the Senate Armed Services Committee
Tom Cotton, U.S. senator from Arkansas
Jon Kyl, former U.S. senator from Arizona
Duncan Hunter, U.S. representative from California and early Trump supporter, member of the House Armed Services Committee
Jim Talent, former U.S. senator from Missouri who was on the Senate Armed Services Committee
Kelly Ayotte, outgoing U.S. senator from New Hampshire and member of the Senate Armed Services Committee


Attorney General

Rudy Giuliani, former mayor of New York City
Ted Cruz, U.S. senator from Texas
Jeff Sessions, senior member of the Senate Judiciary Committee who takes a hard line on immigration
Kris Kobach, Kansas secretary of state, architect of anti-immigration efforts who says he is advising Trump on immigration issues
Pam Bondi, Florida attorney general
Trey Gowdy, U.S. representative from South Carolina who headed the House committee that investigated the 2012 attacks on the U.S. mission in Benghazi, Libya
Henry McMaster, lieutenant governor of South Carolina


Health and Human Services Secretary

Tom Price, U.S. representative from Georgia who is an orthopedic surgeon
Rick Scott, Florida governor
Rich Bagger, former pharmaceutical executive and former top aide to New Jersey Governor Chris Christie
Bobby Jindal, former Louisiana governor


Homeland Security Secretary

Michael McCaul, U.S. representative from Texas and chairman of the House Homeland Security Committee
David Clarke, Milwaukee county sheriff and vocal Trump supporter
Joe Arpaio, outgoing Maricopa County, Arizona, sheriff who campaigned for Trump


Environmental Protection Agency Administrator

Jeff Holmstead, energy lawyer, former EPA official during George W. Bush administration
Mike Catanzaro, energy lobbyist, former EPA official during George W. Bush administration
Robert Grady, venture capitalist, partner in private equity firm Gryphon Investors
Leslie Rutledge, Arkansas attorney general
Carol Comer, commissioner of the Indiana Department of Environmental Management


Energy Secretary

Harold Hamm, Oklahoma oil and gas mogul, chief executive of Continental Resources
Kevin Cramer, U.S. Representative from North Dakota
Robert Grady, venture capitalist, partner in private equity firm Gryphon Investors
Larry Nichols, co-founder of Devon Energy dvn
James Connaughton, chief executive of Nautilus Data Technologies and a former environmental adviser to President George W. Bush


Interior Secretary

Sarah Palin, former Alaska governor, 2008 Republican vice presidential nominee
Jan Brewer, former Arizona governor
Forrest Lucas, founder of oil products company Lucas Oil lei
Harold Hamm, Oklahoma oil and gas mogul, chief executive of Continental Resources
Robert Grady, venture capitalist, partner in private equity firm Gryphon Investors


Commerce Secretary

Wilbur Ross, billionaire investor, chairman of Invesco Ltd subsidiary WL Ross & Co
Linda McMahon, former World Wrestling Entertainment executive and two-time Senate candidate


Director of National Intelligence

Ronald Burgess, retired lieutenant general and former Defense Intelligence Agency chief
Robert Cardillo, director of the National Geospatial-Intelligence Agency
Pete Hoekstra, former U.S. representative from Michigan


Central Intelligence Agency Director

Pete Hoekstra, former U.S. representative from Michigan


United Nations Ambassador

Kelly Ayotte, outgoing U.S. senator from New Hampshire and member of the Senate Armed Services Committee
Richard Grenell, former spokesman for the United States at the United Nations
Peter King, U.S. representative from New York


U.S. Trade Representative

Dan DiMicco, former chief executive of steel producer Nucor nue


Supreme Court Vacancy

The Trump transition team confirmed he would choose from the list of 21 names he drew up during his campaign, including U.S. Senator Mike Lee of Utah, and William Pryor, a federal judge with the 11th U.S. Circuit Court of Appeals.


Labor Secretary

Victoria Lipnic, U.S. Equal Employment Opportunity Commission commissioner and former Labor Department official during the George W. Bush administration
Andrew Puzder, CEO of CKE Restaurants